M12 - Globular Cluster in Ophiuchus

Imaged from Nova Scotia, Summer 2018

Wikipedia Link for M12

 

RGB Combination

Data
Altitude at culmination 43°
Minimum Airmass Value (sec z) 1.5
Mean FWHM 3.1 arc-s
Taking Camera SBIG STL-11002XM Nova Scotia Summer 2018, ~mag 6.8 - no moon @-20C
Imaging OTA AGO 14.5" iDK
Equivalent focal length and ratio 2465mm @ f/6.7
Mount Astro-Physics 1600GTO
Guiding PHD2/ONAG/Lodestar X-2
LRGB Total Integration Time 2hrs 10mins R9x5 min, G8x5 min, B9x5 min, Astrodon Gen 2 I series Filters. All Binned 1X1
Acquisition Main Sequence Software-Sequence Generator Pro
Calibration and Stacking Darks, Flats and Bias - Stacked and calibrated with PixInsight
Reprocessed Mar 2023 PixInsight, Affinity Photo v.2.04 and Bob Franke's CCDBand-Aid

 

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